Energy Sources and Transfer of Energy – Online MCQs Test – Physics 9th

1. Efficiency is :

2. 1 joule = ________

3. Fossil fuels have stored:

4. The S.I unit of energy is:

5. The S.I unit of work is:

6. Power is a:

7. Which one of the following has no unit?

8. If a machine performs 20J of work in 10sec then its power is ____________.

9. 1 hp = __________

10. Coal, gas and oil are all examples of _________.

11. Mathematically potential energy is given as:

12. Wood, organic material, garbage and sugarcane are sources of:

13. The rate of doing work is known as:

14. Water stored in a dam is an example of:

15. The energy that a body possesses by virtue of its position, shape or state of a system is known as:

16. The ability to do work is defined as:

17. If force of 6N displaces an object 2m in the direction of force, then work done will be __________.

18. Unit of power is:

19. A body of mass 1kg is lifted through a height of 1m. The energy possessed in the body will be _________. (consider g = 10ms^-2)

20. Mathematically, kinetic energy is represented by: